Draft Game and Challenge models

[vchess.git] / models / Game.js

var db = require("../utils/database");

/*
 * Structure table Games:
 *   id: game id (int)
 *   vid: integer (variant id)
 *   fen: varchar (initial position)
 *   mainTime: integer
 *   increment: integer
 *   score: varchar (result)
 *
 * Structure table Players:
 *   gid: ref game id
 *   uid: ref user id
 *   color: character
 *
 * Structure table Moves:
 *   move: varchar (description)
 *   played: datetime
 *   idx: integer
 *   color: character
 */

exports.create = function(vid, fen, mainTime, increment, players, cb)
{
	db.serialize({
		let query =
			"INSERT INTO Games (vid, fen, mainTime, increment) " +
			"VALUES (" + vid + ",'" + fen + "'," + mainTime + "," + increment + ")";
		db.run(insertQuery, err => {
			if (!!err)
				return cb(err);
			db.get("SELECT last_insert_rowid() AS rowid", (err2,lastId) => {
				players.forEach(p => {
					query =
						"INSERT INTO Players VALUES " +
						"(" + lastId["rowid"] + "," + p.id + "," + p.color + ")";
					db.run(query, cb);
				});
			});
		});
	});
}

// TODO: queries here could be async, and wait for all to complete
exports.getOne = function(id, cb)
{
	db.serialize(function() {
		let query =
			"SELECT v.name AS vname, g.fen, g.score " +
			"FROM Games g " +
			"JOIN Variants v " +
			"  ON g.vid = v.id "
			"WHERE id = " + id;
		db.get(query, (err,gameInfo) => {
			if (!!err)
				return cb(err);
			query =
				"SELECT p.uid AS id, p.color, u.name " +
				"FROM Players p " +
				"JOIN Users u " +
				"  ON p.uid = u.id " +
				"WHERE p.gid = " + id;
			db.run(query, (err2,players) => {
				if (!!err2)
					return cb(err2);
				query =
					"SELECT move AS desc, played, idx, color " +
					"FROM Moves " +
					"WHERE gid = " + id;
				db.run(query, (err3,moves) => {
					if (!!err3)
						return cb(err3);
					const game = {
						id: id,
						vname: gameInfo.vname,
						fen: gameInfo.fen,
						score: gameInfo.score,
						players: players,
						moves: moves,
					};
					return cb(null, game);
				});
			});
		});
	});
}

exports.remove = function(id)
{
	db.parallelize(function() {
		let query =
			"DELETE FROM Games " +
			"WHERE id = " + id;
		db.run(query);
		query =
			"DELETE FROM Players " +
			"WHERE gid = " + id;
		db.run(query);
		query =
			"DELETE FROM Moves " +
			"WHERE gid = " + id;
		db.run(query);
	});
}